news

这个是LINUX下的GDB调度工具的源码

version 2.0 05-02-96
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* Switched to bfd library. Any supported format (elf, coff, ...) can be used.
* The UART devices can be set through -uart1 and -uart2 switches.
* Switched to GNU readline.
* Added -c option to run batch files at startup
* 'reg' command can show different register windows (eg 'reg w3').
* Use 'help' for online help on simulator commands

version 1.8.1 20-01-96
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* added -mevrev0 switch to simulate MEC rev.0 bugs in timer and uart

* added -iurev0 switch to simulate IU rev.0 jmpl/restore bug

* Added sis command 'batch' to run batch files


version 1.8 30-10-95
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* Added s-record support. Use the '-s' switch with sis or the 'load' command.

* IU load dependencies are now modelled

version 1.7 30-10-95
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* Power-down mode implemented in erc32.c.
  
* Performance display shows the ratio between simulator-time and real-time.


version 1.6.2 25-10-95
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* The UARTs can now be run at a given speed (simulator time) to better
  simulate the behaviour of interrupt routines. The "true mode" is
  selected through a compile switch in the makefile.


version 1.6 28-09-95
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* Major reorganisation of the code. mec.c and mem.c merged into erc32.c.

* The load command does NOT longer load the initialised data at an address
  defined by .bdata. This is done in srt0.s using _environ.

* Additional MEC functionallity added - software reset, memory access
  protection and waitstate configuration register.

* interf.c - a GDB interface added

* -v switch (verbose) added

version 1.5 14-09-95
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* Added a instruction trace buffer, enabled through the 'hist' command.

* Added a 'perf' command to display statistics such as instruction mix,
  CPI, FPU holds etc.

* Added -nfp switch to disable FPU.

* Added -freq switch to set simulated frequency.

version 1.4 22-08-95
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* A -g is provided for those who have problems with GNU readline(). 

version 1.3 26-07-95
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* No major news, just a bug fix release ...


version 1.2 13-07-95
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* Added setting of IU registers through the 'reg' command. See README.

* The GNU readline() function is used for command input. However, a
ctrl-D still kills the simulator ...


version 1.1 07-07-95
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* Added a 'go' command

* Added cycle counting for interrupt overhead.

* Function 'get_mem_ptr' takes one more parameter to avoid segmentation 
   faults if a.out files are loaded outside the simulated memory. See README.

* Added user-defined function sim_stop().

* Added a reset command. See README.

* Implemented buffered output for MEC uarts to improve output speed.